What is the construction and purpose of automotive electrical systems?

Automotive electrical systems are a set of components responsible for starting, charging, powering consumers, and controlling vehicle electronics. They include, among others, the battery, alternator, starter, fuses, relays, controllers, and wiring harnesses. These components are located in different parts of the car and work together through connectors and signal buses.

What are automotive electrical systems used for?

Automotive electrical systems are used to supply energy and transmit control signals to vehicle components. Thanks to them, it is possible to start the engine, charge the battery, and operate lights, windows, air conditioning, and safety systems. A fault in one circuit can affect not only comfort but also the correct operation of other modules.

What role does the wiring harness play in a car?

The wiring harness is an organized set of wires, covers, and connectors that connects individual consumers and controllers in the vehicle. It is used to transmit power, ground, and signals between modules. Its construction depends on the body version, equipment, and mounting location, so when replacing it, you must compare the wire routing, plug type, and number of pins.

How to choose an electrical part for a specific car?

The safest way is to compare the OEM number, manufacturer number, connector type, and mounting location. It is also worth considering the engine version, year of manufacture, body type, and equipment, as the same model may have different variants of the alternator, starter, or controller. In practice, verification by VIN is very helpful.

What symptoms indicate a problem with the electrical system?

Typical signals include difficulty starting, flashing warning lights, dimming lights, unstable charging, or the failure of selected consumers. In some cases, controller errors, air conditioning malfunctions, or periodic power outages also occur. Symptoms must always be linked to a specific circuit and cooperating component.

How to take care of automotive electrical systems in daily use?

The basis is regular inspection of the battery condition, terminals, ground wires, and charging. It is also good to check the tightness of housings, the condition of harness insulation, and the cleanliness of contacts exposed to moisture. A quick reaction to the first symptoms of voltage drops or electronic errors makes it easier to avoid a major failure.

Automotive electrical systems

At Global Parts, we offer a wide selection of original used car parts, including automotive electrical systems for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Each of our car parts undergoes quality control to ensure you receive a top-quality product.

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Land Rover Freelander 2 L359 Radio Head Unit DAB CD Player DH52-18C815-BC

€123.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7456364

BMW F33 F83 M4 Convertible Folding Top Roof ECU Module Control Unit CTM 7456364

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9303543

BMW F20 F30 F31 Fuse Box Electrical Power Distribution 9303543

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 420035225S

Audi R8 42 Spyder Gen 1 Audio Antenna Amplifier Module Unit 420035225

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1645430062

Mercedes W221 Rear View Reversing Camera Control Unit Module A1645430062

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2139003920

Mercedes W213 C238 Stereo Radio Player Sat Nav GPS Control Unit A2139003920

€123.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7N0937503

Audi Q3 8U Skoda Yeti VW Caddy Mk2 Tiguan 7L Fuse Relay Box Housing 7N0937503

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1388911-1

BMW E36 E38 E85 Mini R52 R57 2x Change-Over Contact Relay Violet Set 1388911

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7604782-1

MINI Cooper S R55 R56 LCI R60 Alternator Generator 150A Petrol 7604782

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8512292

BMW E90 E91 LCI N47N 318d 143HP Engine Control Unit ECU DDE 8510832 Manual

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5Q0907651

Seat Leon Mk3 5F Front Crash Impact Sensor 5Q0907651

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. FG9T-14F642-CB

Ford Mondeo Mk5 OBD Diagnostic Port Data Port Socket Module FG9T-14F642-CB

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7L6971693E

Volkswagen Touareg 7L Rear Door Wiring Loom Harness Left Right N/O/S 7L6971693E

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2045400708

Mercedes-Benz W204 Parking Sensor Wiring Cable Harness Rear PDC A2045400708

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. GK21-12A650-CA

Ford Transit Custom 2.0 YLF6 105HP Engine Control ECU GK21-12A650-CA Manual

€541.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6960803

BMW E65 E66 E67 Control Unit Voice Input System Module 6960803

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8494949

Rear Tailgate Sensor BMW F40 F44 F48 Mini F54 LCI Smart Opener Bottom 8494949

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2579005100

Mercedes Sprinter W907 Telematics Services Communication Module A2579005100

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. N8B2-19G229-AA

Land Rover Range Rover Velar L560 Anti Theft Alarm Siren Horn N8B2-19G229-AA

€146.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8U0945093N-2

Audi Q3 8U Facelift Rear Tail Light Lamp Left N/S Cable Harness Wire 8U0945093N

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9468396

BMW U10 X1 U11 X2 U12 Rear Axle Wiring Loom Harness Cable 9468396

€89.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2721503933

Engine Wiring Mercedes C209 272960 Petrol Module Loom Harness Cables A2721503933

€123.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2711535679

Mercedes S203 Engine Control Unit ECU 1.8 Petrol 163 HP A2711535679 Automatic

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4G8971365L

Audi A7 4G Front Seat Belt Warning Wiring Cable Left Right N/O/S 4G8971365L

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2474703702

Mercedes W177 W247 Solenoid Valve Line Pipe Hose Starter A2474703702

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2059065105-2

Mercedes S205 Estate Rear Lamp Inner Wiring Harness Cable RIght O/S A2059065105

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9283526-1

Mini R55 R56 R57 R60 R61 Navigation Head Unit Sat Nav DAB CHAMP 2 9283526

€180.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0025422619-3

Relay Mercedes W203 W204 W212 W639 W906 4-Pin Grey Hella 12V A0025422619

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A9069001103

Volkswagen Crafter 35 Gateway Control Module Unit ECU A9069001103

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 2K7971557

VW Volkswagen Caddy SB Front Door Wiring Loom Harness Right O/S Side 2K7971557

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7625474

MINI Cooper F55 F56 F57 F60 Battery Mounting Bracket Part Holder 7625474

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2185409606

Mercedes C218 Parktronic Parking Sensor Wiring Cable Rear PDC A2185409606

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0009001704

Fuel Pump Module Mercedes W176 W204 C207 W212 W246 Control Unit ECU A0009001704

€80.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4G5971687BQ

Audi A6 C7 4G Rear Door Harness Wiring Loom Cable Left N/S 4G5971687BQ

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9329701

BCM Module BMW F20 F21 F30 F31 F32 Body Control Unit Module REM V2 9329701

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 079911021G

Audi RS4 B8 Starter Motor Petrol Engine Electrical Unit Actuator 079911021G

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7638194

BMW F20 F21 F22 F30 F31 Engine Starter Motor N20 N26 N55 Petrol 7638194

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5A57FC8

BMW F20 F21 F22 F30 X3 F25 M Sport Radio Remote Key Fob Control 868 Mhz 5A57FC8

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 827300D040

Toyota Yaris Mk1 Fuse Relay Box Control Unit Module 827300D040

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7645979

Mini F54 F55 F56 F57 F60 Petrol B36 B38 B46 B48 Engine Starter Motor 7645979

€51.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6958447

BMW 7 Series E65 Control Unit Door Rear Passenger Side Hinten Low BFT 6958447

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8645325

Alternator BMW F20 F21 F30 F31 LCI F32 F33 F34 Petrol Engine Unit 180A 8645325

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2429004801

Mercedes W176 W204 W212 Telematics Communication Control Unit Module A2429004801

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. GB3G-12A650-AA-1

Ford Ranger Mk3 2.2 TDCI GBVAJQJ 160HP Engine ECU Kit GB3G-12A650-AA Automatic

€503.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8T2035652F

Audi A5 8T A4 B8 Sat Navi Stereo Radio Audio MMI Head Unit CD Player 8T2035652F

€99.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8612583

BMW F45 Mini F60 HV Accumulator Battery Positive B+ Cable Ground 8612583

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BJ32-14D620-AB

Range Rover Evoque L538 Rear Door Control Unit Module BJ32-14D620-AB

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1J0906381B

Audi TT 8N Fuse Box Relay Control Unit Module 1J0906381B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2045400150

Mercedes-Benz C E Class W204 W207 Fuse Distribution Box Interior A2045400150

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3C0959433AJ

Volkswagen Passat CC Comfort Unit Convenience System Control ECU 3C0959433AJ

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8570383

BMW F10 F11 X5 E70 2.0 Diesel 12V Starter Motor 8570383

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8W1907064BC

Audi A4 B9 Body Control Module BCM Comfort Control Unit Power Supply 8W1907064BC

€104.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. GJ32-14N072-AA

Range Rover Evoque L538 Supply Distributor Mount Bracket Tray GJ32-14N072-AA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. KK62-14301-BE

Land Rover Range Rover Sport L494 Negative Battery Earth Cable KK62-14301-BE

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 04C907309BB

Audi A1 GB Engine Control Unit ECU 1.0 Petrol 115 HP Manual Gearbox 04C907309BB

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9146244

BMW X3 X5 E53 E83 Control Unit Sliding Lifting Roof Panorama 9146244

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2518200856-3

Mercedes W169 W204 C207 Front Fog Lamp Wiring Harness Plug Right O/S A2518200856

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. KK3T-14F642-AG

Ford Transit Custom OBD Connection Port Unit Module KK3T-14F642-AG

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8W0971277

Audi A4 B9 S4 8W A5 S5 F5 Front Motor Grille Shutter Wiring Cable Loom 8W0971277

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9257364

BMW F01 Antenna Amplifier Audio Control Module 9257364

€180.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7515206

Mini Cooper One R50 R52 Battery Alternator Starter Cable Wiring 7515206

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9383694

BMW F10 Footwell Light Module Control Unit ECU TEMIC 9383694

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 99661510200

Porsche Boxster 986 Rear Spoiler Control Relay 99661510200

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 95B035035J

Porsche Macan 95B Multimedia MIB2 Navigation Head Unit Control Module 95B035035J

€759.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K0941824A

Audi A1 A4 A6 A7 A8 Fuse Box Connector Socket Module Unit 8K0941824A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3D0919887E

VW Volkswagen Phaeton 3D Head Unit Navigation Control Unit CD 3D0919887E

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. ML3A-5L200-AD

Volkswagen Amarok Mk2 DPF Filter Pressure Sensor 3.0 TDI ML3A-5L200-AD

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2139065706

Mercedes W205 W213 Front Engine Compatment Fuse Relay Box Module A2139065706

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5QF959655AM

Seat Arona Fr Kj7 Air Module Control Unit ECU 5QF959655AM

€218.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7616120

Alternator BMW F20 F21 F30 F31 F36 Petrol N55 Generator 210A 7616120

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8V0907376C

Audi A3 S3 8V Air Suspension Damping Module Control Unit 8V0907376C

€94.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4M1959792J

Audi A6 C8 Q5 FY Door Control Unit Module ECU Passenger Side 4M1959792J

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4G0907551E-1

Audi A6 C7 3.0 TFSI Quattro 310HP Engine Control ECU Kit 4G0907551E Automatic

€332.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6832062

BMW F10 F13 X3 F25 Wireless Charger Centre Console Phone Charging Module 6832062

€75.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4M1959595K

Audi A6 C8 A7 4K Door Module Rear Left Right N/O/S Control Unit ECU 4M1959595K

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. GJ32-14D618-BA

Land Rover Discovery Sport L550 Door Module Front Driver's Side GJ32-14D618-BA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9365802

BMW X5 F15 Front Door Wiring Loom Harness Cables Driver Side 9365802

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4K0907347A

Audi A6 C8 Mild Hybrid Power Distribution Mount Bracket Support 4K0907347A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2055451500

Power Connection Mercedes W205 W213 C238 X253 Battery Starter Alternator Wiring

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 99655277300

Porsche Carrera 996 Centre Console CD Magazine Storage Unit Holder 99655277300

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03L906022MA-1

Audi A3 8P Engine Control Module ECU 2.0 TDI CBAB 140HP Kit 03L906022MA

€237.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6934030

BMW 7 Series E65 E66 Wiring Loom Harness Right O/S Front Door 6934028

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7L6945096P-2

Volkswagen Touareg 7L Rear Tail Light Lamp Wiring Harness Right O/S 7L6945096P

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8W6945092N

Audi A5 F5 LED Rear Outer Tail Light Taillight Lamp Right O/S 8W6945092N

€142.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9340998

BMW 1 2 Series F21 F22 Wiring Passenger Side Loom Front Door Left N/S 9340998

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8736682

BMW i3 I01 Body Domain Comfort Control Unit BDC Module ECU 8736682

€313.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. HPLA-10C679-AD

Range Rover Sport L494 Battery Negative Earth Cable Sensor HPLA-10C679-AD

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1669006307

Mercedes GLE C292 ML W166 Door Control Module Rear Left N/S A1669006307

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 04L906021CA-1

Audi A4 B8 2.0 TDI CSUA 150HP Engine Control Unit ECU KIT 04L906021CA Automatic

€170.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. FK72-14D617-BD

Land Rover Discovery Sport Front Door Control Module Left N/S FK72-14D617-BD

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. P8A2-9L468-AA

Land Rover Range Rover Velar L560 Rear Chasis Wire Harness Loom P8A2-9L468-AA

€284.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 0332209150

Range Rover Sport L320 Relay 4-Pin Unit Bosch 12V 20/30A Black 0332209150

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6958526

BMW 5 X5 X6 Series E60 E61 E70 E71 F07 F10 F11 Seat Adjustment Switch Right O/S

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5B65011

BMW F70 F74 G60 G61 G68 X2 U10 X1 U11 BCP Body Control Module Unit ECU 5B65011

€379.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4F0971085E

Audi A6 C6 Rear Bumper Parking Sensor Wiring Loom Harness 4F0971085E

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6951674

BMW E81 E87 E90 PDC Parking Sensor Ultrasonic Sparkling Graphite A22

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7152588

Mini Cooper One R50 R53 JCW Fuel Filler Cover Flap Actuator 7152588 7127872

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7951069

KaFAS Camera BMW F45 Front Camera Control Unit Module 9384688

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. K8D2-14M726-AC

Range Rover Evoque L551 Battery Distributrion Terminal Harness K8D2-14M726-AC

€94.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

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